Allardyce -- who gained credit for keeping Sunderland in the Premier League last season -- replaces Roy Hodgson, who stepped down after England lost to minnows Iceland in the last 16 of Euro 2016 last month.

Ronaldo was forced off with an anterior cruciate ligament injury after a challenge from Dmitri Payet in the 24th minute as Portugal beat hosts France 1-0 to win the Euro 2016 final at the Stade de France in Paris.